Crusher.



W. H. LIEBER.

CRUSHER.

APPLIUATION FILED DBO. 29, 1911.

Panented June 18, 1912 arr 1745454 7 g 1 1 1 1 a 1 1 H 1. .w 2 n H 1% 1m e I, Am. 1--- 1m 1 N a 1 ISy WITNESSES vN-rc:

(Ma/6 15v flza w A T FERN EY- W. H. LIEBER.

GRUSHER.

APPLICATION FILED DEU.29, 1911.

Patented- June 18, 1912;

2 SHEBTSk-SHEET 2.

(Em/6M BY 73m 8 I ATTEJRNEY- a cit-izenof the United States,residing'at' Milwaukee, in the county o f-Milwaukee and j othermaterials,

- in a co-pending WILLIAM H. IIIEBER, or MILWAUKEE, wI

SCONSIN, ASSIGNOR 'ro A Lrs-cH rMEEs COMPANY, or M LWAUKEE,- wiscons maCORPORATION OF NEW- JERSEY;

. I I V f cEusH n.

To'all whom it'may concerns j' Be it known that I, WI L AM H.'-LIEBER,

State ofeWisconsin,'hayeainvented a certain L new and useful Improvementin Crushers, of which the following 'is a specification. J Thisinvention relates to improvements in the construction of 'crushers forrock or of the type which a pair of crushing'members-are'rotated about'dif-. ferent axes, the material being fed along the membersjby therotation thereof and one i of the members being positively rotated whilethe other is driven by the material as it becomes lodged between thecrushing sur: faces of the two members. In crushers of.

this type as heretofore constructed with a stationary eccentric forcausing the n1embers to rotate about dlfierentaxes, it has been foundthat in orderto obtain the maximum capacity of the machine it was neces-'sary to rotate the members at a high-rate of speed thereby causingconsiderable. wearonthe various parts of the machine which weresubjected to the material during its passage through the crusher ata'high ve:

locitv.

609,648, filed Feb. 20, 1911.v a

provide a simple and efiicient means wherebythe speedjofprotation ofthe; crushing members can be reduced without "decreasingv the capacityof the machine, thus eliminate 7 ing the objectionable excessive wear onthe forming a part of this specification, in which crushing members: 1'i -The main-unner s aft "of ribs 9' with {an Specification of LettersPatent." Q te t Jun 1 1 Application-filed December 29, 1911.

Serial no; 868,407.

like reference characters designate the same or similar parts in thevarious -views..

Figure ,1 is a. central vertical section through a crusher anditsinclosing casing.

Fig; 2 is a transverse fragmentary section of the; crusher shownj'in'.vFig. 1, the section being takenfialong'fthe lineII-JI looking in thedirection of-the arrow.- Fig. 3 is a central vertical section'through acrusher and its inclosing casing, having means for vary ingthe'eccentricity members. Fig; 4 a I transverse fragmentary 'sectionthrough the crusher disclosed I ing stationary bearing for both of the 2of the crusher, see Figs.- lf and; is'unounted vertically andconcentrically.- within a sleeve 3 formed in one with 't-hea stationarycrusher frame 19. The convexcrushing member or disk -20 is providedwithfthe'wearing liner 7 andis secured to the-Lupper end oft-he shaft 2in any suitable manner, as by. keys. Thev I s liner 7 is locked againstrotation relative to The present invention is an improvement l on thedevice disclosed herein and claimed application Serial Number' theeonvex disk 20. The-drivin pulley 14 is fiikcd to'the lower end-of theinner shaft 2 by any suitable fastening means, such as A keys, and ishoused in the lower portion of An object of the present invention 1s to'the crusher frame 19. The concave crushmg member or disk 8 is connectedby means flange 22 which is formed in one with the upper end ,of theouter shaft or sleeve 6, and extends toward its axis of rotationTm'I-heconvex member or, disk 20 projects intojthe concave member 8, thecrushing chamber 1 two members.

being formed between the Bolts 21 are securedto the ribs Qand-projectupwardly: through 1 the flanged periphbetween the crushing inwardlyprojecting cry of the concave'disk 8. A series of liners cave disk 8means of .nuts which screw upon the -o'uter=. ends ofthe bolts'21. The

nects the feed hopperll with the crushing chamber 1 formed between-thecrushing or shims 23 embracethe bolts 21 and are clamped ,betweentheupper end surfaces of the ribs 9 and lower surfaces of the con- 45tionary inclosing housing for the crusher members. The crushing membersare so positioned that a discharge opening exists between the membersadjacent the ribs 9, the extent of this opening being adjustable byvarying the number of shims 23.

An eccentric bearing or sleeve 5 has its interior surface bored so as tofit the external cylindrical surface of the fixed hearing or sleeve 3.The outer cylindrical surface of theeccentric sleeve 5 is turned to fitthe internal bore of the sleeve6. As dis= closed in Fig. 2, the outerand inner cylindrical surfaces ofthe eccentric sleeve 5 are generatedabout" different parallel axes. The pulley 4 is formed-in one with thecocentric sleeve 5, the combined sleeve and pulley being supported uponan upper horizontal surface of the'st ationary frame 19. The pulley 4 isprovided with a housing 12 which is secured to the stationary frame 19:andhas passages forflpermit-ting belt connection-to the exterior of thecrusher casing. -'The bearing plate-l3 has an upper surface which coactswith thelewer surface of the flange 22,- and a lower surface which"coacts with the upper surface (if-"the fixed bearing or stationarysleeve 3. .Itshould be noted that sufficient clearance' has been allowedbetween the upper-surfaces of they eccentric sleeve 5 and the lowersurfaces of the sleeve 6 and bearing plate 13 to permit the entireweight of the crushing members to rest upon the upper end of thestationary t sleeve 3, rather than upon the eccentric sleeve 5. v I

with funnel. shaped walls 16 which are connected to the frame 19 bymeans of a series of ribs 18.

Discharge openings 17 are formed at the lower ends of the wall 16 andframe 19. Liners 15 are supported in a groove at the upper end of thewall 16 and in turn support. the conical cap l0 through which theinlethopper. 11 is formed. The wall 16, 1 .iers 15 and cap 10 combinedforma sta- In the crusher as disclosed in Fig. 3 the eneralconstructionof the frame 19, the inclosing casings and the crushing members, isidentical with that above described. The

I eccentric bearing or sleeve 25 which has the pulley 4 formed integraltherewith, is provided with an outer cylindrical surface which coactswith the inner bore of the sleeve 6. The inner bore of the eccentric 25coacts with the outer cylindrical surface of a second eccentric sleeve24, the lower surface of the eccentric sleeve 25 resting upon a 'planesurface formed on the base of the eccentric sleeve 24. The, inner boreof the eccentric sleeve 24 coacts with the outer cylindrical surface ofthe stationary sleeve 3. Theeccentric sleeve 24 has, a lower planesurface which rests upon an upper surface of the frame 19. With thisconstruction the combined .eccentricsleeves 24, 25 and pulley 4 aresupported directly upon the stationary frame 19. The lower p0rtion ofthe eccentric sleeve 25 isprovlded with a series of radial grooves orslots 28, see Figs. 3 and 4. The portion of the eccen-' tric sleeve 24upon which the combined sleeve 25 and pulley 4 are supported, isprovided. with a single radial slot in which a key 27 is adapted tobeinserted. By re moving the key 27 and rotating the outer eccentricsleeve 25 upon the inner eccentric sleeve. 24, the eccentricity of theouter cylindrical surface of the sleeve 25 can be varied. lVit-h the key27 inserted in-a pair of adjacent slots as shown in Figs. 3 and 4, theinner and outer sleeves 24 and 25 are locked together so that rotationof the pulley 4 will cause the inner sleeve 24 to rotate about thesleeve 3. The inclosing housing 12 'of normally closed by a cover plate26, through which the key 27 may be removed and inserted so that anydesirable variation of the eccentricity of the outer cylindrical surfaceof the sleeve 25 can be conveniently made. In the form of crusherdisclosed in Fig. 5, the stationary bearing or sleeve 32 which is formedin, one with the frame 19, has its outer cylindrical surface generatedon" an axis which is eccentric to the. axis of the inner borethereof.The inner bore of the eccentric bearing or sleeve 33 coacts with theouter cylindrical surface of the stationary' sleeve 32 and has an outer,cylindrical surface which is formed eccentric to its inner. bore. Theouter cylindrical surface ofthe sleeve 33 coacts with the inner bore ofthe outer shaft or sleeve 6 which sleeve carries-the con-cave crushingmember 8. The sleeve 33 has alowerqplan'e surface which coacts with. anupperplane surface of the frame 19 The bearing plate 13 restsdirectly'upon'an upper plane surface which is common to. the upper endsof both sleeves 32, 33. is provided .with a series-:of radial slots 34.The key 35 is adapted tocoact in a radial through which oil be forced tothe 11; The mam inner crusher. shaft 2 is rotated by means of belt powerapplied'to the pulley 14 at the lower end of the shaft.

the pulley 4,is provided with an opening,

The lower portion of the sleeve 33 slot formed in the frame 19 andserves as a' "12c disk 20, is provided with crushing chamber 1 throughthe inlet hopper As the material deposited in the chamber 1' drops uponthe rotating liner 7 of the disk 20, it is fed-or-passed outwardly bythe action of centrifugal force and'becom'es wedged between the conicalsurfaces of the liner 7 and the concave. crushing? disk 8. This wedgingof the material between the crushmg member's causes the rotation of thecon% vex crushing-head tobe transmitted to the concave crushing disk 8,causingthe twol crushing members to'rotate in the'same di-x rection andat substantially equal speeds.

'S1nce the concave crushing disk 8 is mounted upon the outer cylindricaleccentric surface oft-he sleeve 5, th'edisk 8 will have a Ydilferent'axis of rotation than that' of theconvex crushing member. Therotation of th e' crushing disk 8".upon a diiferentaxis than that uponwhich the 'convex crushing member'rotates, will cause each portion ofthe crushing surface ofone of the members to approach and recede from anadjacent portion of. the other member, :once inweach revolutionproviding the axes oftthe members are held stationary. The eccentricouter shaft or'sle'eve .5 is rotated however:

by means of a .belt coacting with the pulley.

14 in a direction opposite to the direction of rotation of the crushingmembers. This 5 rotation of the eccentric sleeve 5 causes thepassingthrough the thickest'portion of the rot-ates in a directionopposite to the direc-' eccentric sleeve 5. As the eccentric sleeve tionof rotatiorf of the crushing members,

the axis of the vertical bearing surfaceof the concave disk 8 moves in acircular path about-the axis of the convex crushing member, thusgyrating the disk 8 and causing the vertical planes marking thepositions of least and greater distances between the memem upon the rateof rotation of the eccen-.

bers to move in circular paths. The rate of travel of these imaginaryplanes is dependtric sleeve 5. This shifting of these planes causes eachportion of one of the members to approach an adjacent portion oftheother member more than once in each revolution.

. By thus cai sing'each 'portion of the crushother member more than oncein each revomg surfacesof one member to approach and recede fromcorresponding portions of. the

lution of the members, it will be seen that .the speed at which thecrushing members must be rotated can be greatly reduced while the samecrushing effect and ca-. pacity of machine that is produced byl ioldingthe eccentric sleeve 5 stationary 1s obbetween the-ribs 9 ,ontotherotation of same.

tained. This reduction in. the necessary speed of rotation will greatlyreduce the velocity at which the material is discharged liners15,.thereby reducing'the wear on the machine ele;

essary tolsrotate the sleeve-5 Pin a direction opposite tot-thedirectiona of' rotatibnof the" high -rate of rotation of the. sleeve '5is necessary in order to produce'lthe same effect that isobtained byrotatingthe sleeve in the oppositedirection, Asthe material becomescrushed by the apprgach ;.of the crushing surfaces, which however'areat'no time in contact-with each Othel',-ittoward the peripheries of the,disks by centri'fugal force. The formation 'ofthe crushing surfaces issuch as to aid in-feed-ing the .material along the crushing'member's bythe Upon being d scharged from the crushing chamber 1, the crushedmaterial is discharged through thepassages 17. y

from the crusher. .4

'70 ments. ltshould be-noted that fit is not neca v that of the crushingmembers ls'that a very,

is gradually fed n With the use of a double eccentric as .jdis'closedin'F-igs. 3, and 5', the extent -of eccentricity or the radlus ofgyration -be-- 1 tween the crushing members can be easily andeffectively varied by shiftingone ,of the eccentric sleeves upon theother. In the construction disclosed in ,Fig. '3, the combined eccentricsleeves 24, 25, are adapted to be rotated as in the constructiondisclosed in Fig. 1 the locking together of the two sleeves beingaccomplished by means of the key 27. In the construction disclosed inFig. ,5, the eccentric sleeve 33 is, rotatable upon the sleeve 32 forthe purpose of varying the extent of eccentricity'between the crushingmembers, butthe combined eccentric mounting for the concavecrushing disk8 is stationary relative to the frame '19.

The lubrication of the bearing surfaces of the crusher can be easilyaccomplished by passing lubricant through the passage 81 to the chamber30, from which chamber the lubricant is fed downwardly automaticallyalong {the bearing'surfaces of the sleeve 6 and shaft 2 by the actionofgra-vity thereon, and outwardlyalong the horizontal bearing surfacesof the various elements'by the action of centrifugal force thereon. Asthe crushing members are forced in contact with each other along theirplane surface of coaction, only sufficient lubricant will be permittedto -pass between the members to efficiently lubricate the bearingsurfaces, and the discharged product will not be flooded with oil.

The present disclosures show crushers in which the elements. arevertically disposed, the terms upper and lower being used in describingvarious parts thereof. It should the positively driven rotating members,

Y ters Patent,

' each other.

'of said members to positively fee material vious modifications willoccur to a;

, flange connected to one of said members and 50 not be inferredhowever,-from this descriptive matter that the device cannot be'used ina horizontal or any other than a vertical position as the terms havemerely been used to avoi complicated description. 'An advantage ofhaving the crusher vertically disposed, is that the materialdischargedfrom the machine as well as the wear on the parts are more evenlydistributed. Another 'advantage resulting from the vertical dispo sitionof the machine is that the entering raw material can be depositeddirectly upon -By so arrangin the supporting bearings that the weight 0the crushing members is carried by the stationary frame rather thanbythe rotatin eccentric sleeves, the power necessary for driving thesleeves is reduced to a minimum. The compactness of the maf chine isalso augmented by positioning the eccentric sleeves as near to thecrushing members as possible. {',-I"-"--f It should be understood thatitisnot 'desired to belimited to the exact details-of construction shownand described," ffo skilled in the art. i

It is claimed, and desired to secure 1. In a crusher, a pair ofrotatable crushing disks, inner and outer shafts wliichp said disks arecarried, an eccentricfor"g'yrat-v in said outer shaft, and means forrotating said eccentric. f j' 1;,"

2. In a crusher, a pair of rota-tablecrushing disks, inner and outershafts by which sald disks are carried, an eccentric for gyratin saidouter shaft, and means for rotating sald eccentric independently of saiddisks and shafts.

3. In a crusher, a pair of rotatable crushing disks, shafts by whichsaid disks are carried, a rotatable eccentric for gyrating one of saidshafts, and a fixed bearing on which said eccentric is rotatable,saideccentric being located near said disks.

4. In a crusher, a pair of rotatable crushing members one -internal ofthe otherya extending toward its axis of rotation, a plane engagementbetween said flange and the other of said members, and rotary meanspositioning said members eccentrically of 5. In a crusher, a rotatableconcave member, a rotatable convex member internal of the concavemember, rotary means eccentrically positioning said members with thecrushing surfaces nowhere in contact with each other, and means forcausin rotation from end to end of the members by centrifugal force.

6. In a crusher, a pair of rotatable crushing members one internal ofthe other,

means for'causing rotation of said members to positively feed materialalong the members by centrifugal force, and rotary. means for-causingopposing surfaces of said members to approach and recede transversely totheir axes.

7. In a crusher, a concavecrushing member, a convex crushing memberinternal of said concave member, a frame supporting.

said members, means forcausing rotation of said members to positlvelyfeed materlal from end to end of the members by centrifugal force, andmeans for gyrating one of said members relative to said frame.

'- '8." Inacrusher, a frame, two, parallel rotatable shaftsone internalof the-other carried by saidframe, coacting crusher heads icarried.bysaid'shaft's, and means for gyratingoneof said shafts relative to saidframe. 9. In a crusher, two crushin members ha'vingtheir respective axespara lel to each other, one of said members extending around 'to andcoacting in plane contact with'the rear of the other, means forpositively rotating oneof said members,]and means for moving the otherofv said members so that its axis revolves aboutthe-axis of saidpositively rotated member;

10. In a crusher, a pairofcrushing disks, inner and outer shafts bywhichfsaid 'disks. are carried, an eccentric for gyratingsaid outershaft,:-.means;for varying the eccentricltyof said eccent c, and meansfor rotatingrsaid eccentric.

11. In :a cru her, aJpair' of rotatable crush.-

i"di'sks,=inner and'ofitenshafts by which lsa'lddisksare carried, aneccentric :forv gyrating"said;outer shaft, means for varying theeccentricity of said eccentric,,and means for rotating said eccentricindependently of said'disks and shafts. s 12. In a crusher, a

crushing disks, shaftsh-by which said disks are carried, a rotatableeccentric. for gyrating one of said shafts, means2f0r'vary1ng theeccentricity of said eccentric, and'a fixed bearin on which saideccentric is rotatable. 13. n a crusher, a frame, two parallel ro-.,tatable shaftsone internal of the other car'- ried, by said. frame,coacting crusher .hea'dsf carried by said shafts, means for gyrating oneof said shafts,and means forvarying the radius of gyration.

14. In a-crusher, a pair of crushingbers, inner and outer shaftsby-which said, -members are carried, a frame for supportm'gll 1 saidshafts, an eccentric for gyrating. one of said shafts relative to-said'frame,-and means for pair of I rotatable for varying theeccentricity of said eccentric.

15. In a crusher, a pair of rotatable crush-J ing disks, inner and outershafts by which said disks are carried, an eccentric for gyrating saidouter shaft, and means for varying the eccentricity of said eccentric.

16. In a crusher, a pair of rotatable crushing members, shafts by whichsaid members I ment' of said members toward and away 15 are carried, aframe for supporti shafts, an eccentric for gyrating one of said shaftsrelative to said frame, and means for varying the eccentricity of saideccentric.

In a crusher, a pair of rotatable crushing members, shafts by which saidmembers are carried, an eccentric for gyrating oneof said shafts, meansfor varying the eccentric- 10 ity of said eccentric, and means adaptedto rotate said eccentric in a direction oppositev to the direction ofrotation. of saidmembers. 18. In a crusher, a pair of rotatable crushingmembers, means for permitting adjustng said from each other, shafts bywhich said memers are carried, a frame for supporting said shafts, .aneccentric for gyrating one of said shafts relative to said frame, andmeans for varying the eccentricity of said eccentric. 20

In testimony whereof, the signature of the inventor is aifixed hereto inthe presence of two witnesses.

- WILLIAM H. LIEBER. Witnesses:

G. F, DE VVEIN, H. C. CASE.

